JP4625551B2 - Mouthpiece for inhalation therapy device - Google Patents

Mouthpiece for inhalation therapy device Download PDF

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Publication number
JP4625551B2
JP4625551B2 JP00857499A JP857499A JP4625551B2 JP 4625551 B2 JP4625551 B2 JP 4625551B2 JP 00857499 A JP00857499 A JP 00857499A JP 857499 A JP857499 A JP 857499A JP 4625551 B2 JP4625551 B2 JP 4625551B2
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JP
Japan
Prior art keywords
orifice
mouthpiece
valve member
base
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP00857499A
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Japanese (ja)
Other versions
JPH11276587A (en
Inventor
スタプレトン ケビン
ガレム トーマス
クノッホ マルティン
バルドナー ロベルト
Original Assignee
パリ ゲゼルシャフトミット ベシュレンクテル ハフツング スペツィアリステン フィア エフェクティブインハレーション
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE19801545A priority Critical patent/DE19801545C2/en
Priority to DE19801545.3 priority
Application filed by パリ ゲゼルシャフトミット ベシュレンクテル ハフツング スペツィアリステン フィア エフェクティブインハレーション filed Critical パリ ゲゼルシャフトミット ベシュレンクテル ハフツング スペツィアリステン フィア エフェクティブインハレーション
Publication of JPH11276587A publication Critical patent/JPH11276587A/en
Application granted granted Critical
Publication of JP4625551B2 publication Critical patent/JP4625551B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20Valves specially adapted to medical respiratory devices
    • A61M16/208Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00Inhalators
    • A61M15/0001Details of inhalators; Constructional features thereof
    • A61M15/0018Details of inhalators; Constructional features thereof with exhalation check valves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0488Mouthpieces; Means for guiding, securing or introducing the tubes
    • A61M16/049Mouthpieces

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mouthpiece for an inhalation therapy device having the features of the preamble of claim 1.
[0002]
[Prior art]
Such a mouthpiece is known from the German utility model G9321308.5, which is attached to the outlet connection of the inhalation device for inhaling the drug-containing aerosol produced in the inhalation device. Known mouthpieces have a check valve that closes the orifice formed in the mouthpiece wall during the inhalation process so that the patient can inhale the aerosol created by the therapy device during the inhalation process. During the exhalation process, the valve member opens the orifice, expelling exhalation directly from the mouthpiece (exhalation) so that it does not enter a significant extent into the therapy device. Known mouthpieces are made so that the orifice is provided in a substantially flat wall of the mouthpiece. The check valve is formed as a flat and resilient valve member, the size and shape of which is designed to close the orifice. The valve member is externally fixed by a clamp to the base portion of the flat region of the wall portion, and when in its original state, the valve member comes into contact with the base portion and closes the orifice by an effective elasticity. The orifice opens when the valve member is partially lifted from the base by (patient) exhalation.
[0003]
[Problems to be solved by the invention]
In this known mouthpiece, it has been shown that aerosol droplets accumulate in the orifice region or in the elastic valve itself. Due to the large accumulation of this liquid, when the orifice is opened, i.e., when the valve member is lifted during the exhalation process, the accumulated droplets scatter around. In this way, aerosol droplets are scattered on the patient's face and eyes.
[0004]
Accordingly, it is an object of the present invention to improve known mouthpieces for inhalation therapy devices so that liquid splashing is avoided when the orifice formed in the base of the mouthpiece is opened by a valve member. .
[0005]
[Means for Solving the Problems]
The purpose is a mouthpiece for an inhalation therapy device for preparing an aerosol for inhalation for a patient, the mouthpiece having a substantially tubular base with an orifice formed in the wall and having a flat elasticity. The size and shape of the valve member is designed to close the orifice, so that the orifice closes during the inhalation process through the mouthpiece and opens during the exhalation process where exhalation is delivered into the mouthpiece. Achieved by a mouthpiece for an inhalation device, characterized in that an elastic valve member is fixed to the mouthpiece and the orifice has at least one enlarged contact surface to accumulate and hold liquid by adhering Is done.
It is advantageous to provide an enlarged contact surface, in particular on the side of the orifice facing the valve member fixing part.
[0006]
According to the present invention, the collar (rib) can be formed on the edge of the orifice, and the enlarged contact surface can be formed so that the edge of the orifice becomes the contact surface of the valve member.
In addition, the enlarged contact surface can be made such that a bar extending into the mouthpiece opening is provided. It is advantageous if this bar extends in the longitudinal direction of the base. The bar also prevents the valve member from being sucked into the mouthpiece.
In another configuration, the bar extends below the orifice surface to the base (1). In this case, the surface, that is, the side surface of the bar formed as the enlarged contact surface is enlarged.
[0007]
It is also advantageous to have an extension bar that joins the bar located in the orifice and extends over the inner wall of the base to partially include the inner wall of the mouthpiece as an enlarged contact surface according to the present invention.
In order to return liquid in particular, a crossbar is provided that extends across the base connected to a bar or extension bar located in the orifice.
In another configuration, a fixing hole is provided in the base for fixing the valve member near the orifice. This may for example be a slot. Corresponding to this, the flat elastic valve member is provided with a fixing protrusion which can be inserted into the fixing hole in order to fix the valve member.
[0008]
In a particularly advantageous configuration, a wedge-shaped projection is provided on the outer wall of the base so that the valve member can be secured to the mouthpiece with little initial stress. In this case, it is advantageous if the fixing hole is arranged in the wedge-shaped projection.
An advantageous configuration of the mouthpiece according to the invention is shown in the subclaim.
[0009]
In summary, the present invention provides a mouthpiece for an inhalation therapy device for preparing an aerosol for inhalation in a patient, the mouthpiece having a substantially tubular base with an orifice formed in the wall. The mouthpiece is sized and shaped to close the orifice and closes during the inhalation process through the mouthpiece and opens during the exhalation process where exhalation is delivered into the mouthpiece. A mouthpiece having a flat resilient valve member fixed to the body. According to the invention, the orifice is provided with at least one enlarged contact surface for accumulating and holding liquid by adhering. This contact surface is obtained by a collar portion facing outward around the periphery of the orifice, and a bar extending in the orifice in the longitudinal direction of the mouthpiece and an elongated bar extending across the mouthpiece.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The invention is explained in more detail below on the basis of embodiments and with reference to the attached drawings.
1 and 2 show a first embodiment of a mouthpiece according to the present invention. FIG. 1 is a cross-sectional view of the mouthpiece in the long axis direction, and is a view in which the mouthpiece shown in FIG. 2 is cut through the center in the long axis direction. As shown in FIGS. 1 and 2, the mouthpiece has a substantially tubular base 1, and an orifice 2 is formed in the wall thereof. As shown in FIG. 1, the flat and elastic valve member 3 is fixed to the mouthpiece such that the fixed protrusion 4 of the valve member 3 is inserted into the fixing hole 5 of the mouthpiece and fixed. The valve member 3 is not shown in FIG. However, as is apparent from FIG. 1, since the size and shape are designed to fit the orifice 2, the valve member 3 closes the orifice 2 when the patient inhales through the mouthpiece. When the patient pumps exhalation into the mouthpiece, the valve member 3 is lifted and the orifice 2 opens. Therefore, the valve member 3 moves within a range of about A shown in FIG.
[0011]
The enlarged contact surface according to the present invention is formed by the collar portion 6 around the orifice 2 in the embodiment shown in FIGS. The valve member 3 is in contact with the upper edge portion 7 of the collar portion 6. When viewed from the fixed position of the valve member 3, the height of the collar portion 6 gradually increases and reaches the maximum at the end on the opposite side of the fixed portion. The contact surface of the valve member 3 is flattened by the edge portion 7 of the collar portion 6, whereby the valve member 3 can close the orifice 2 along the edge portion 7 of the collar portion 6. In the fixed portion, the valve member 3 is in contact with the wall portion of the base portion 1 from the outside. In this case, the fixing hole 5 is advantageously formed as a slot that actually extends over the entire width of the orifice 2. In this way, on the one hand, it is ensured that the valve member 3 is in close contact with the fixed part, and on the other hand, the valve member 3 is securely attached to the mouthpiece.
[0012]
During inhalation therapy, if the patient breathes through the mouthpiece, aerosol droplets that are not aspirated, aerosol droplets contained in the patient's breath, or aerosol droplets that reach the mouthpiece from the inhalation therapy device between breaths According to the present invention, it is deposited on the collar portion 6 forming the enlarged contact surface at the orifice 2. The enlarged contact surface improves adhesion of a large amount of liquid, and this accumulated liquid is returned to the inside of the mouthpiece. The coarse droplets are hardly separated and all or a part thereof is returned by the valve member 3 that moves in accordance with the respiratory rhythm, so that the liquid accumulated on the enlarged contact surface 6 of the orifice 2 does not scatter. On the other hand, when a long-time treatment is performed, a large amount of liquid may be accumulated. However, the enlarged contact surface 6 of the orifice 2 returns to the inside of the mouthpiece in the form of a droplet by gravity, and is moved again by the moving valve member 3. This has the effect that a significant amount of liquid accumulation is safely avoided.
[0013]
FIG. 3 shows another embodiment of a mouthpiece according to the invention with an enlarged contact surface. Although there is a difference described below, the structure of the second embodiment is the same as that of the first embodiment, and therefore the first embodiment is referred to as the description of the second embodiment. Similar to the first embodiment, the collar portion 8 is formed at the edge of the orifice 2 in the embodiment of FIG. A valve member is in contact with the edge 9 of the orifice (not shown in FIG. 3). However, unlike the first embodiment, the height of the collar portion 8 is substantially constant. In the fixed part for the valve member, a wedge-shaped projection 10 is provided on the wall of the mouthpiece. The surface of the wedge-shaped protrusion 10 facing the valve member is continuous with the edge 9 of the collar portion 8, that is, the wall of the wedge-shaped protrusion 10 corresponding to the height of the collar portion 8 faces the orifice 2. Designed to be. As in the case of the first embodiment, the fixing portion of the valve member is also provided with a fixing hole 5 in the form of a slot, and the fixing protrusion of the valve member can be inserted and fixed therein. The valve member contacts the surface of the wedge-shaped projection 10 already mentioned and the edge 9 of the collar 8 and closes the orifice 2 during the intake process.
[0014]
In the configuration of the second embodiment, the valve member is fixed in a state where little initial stress is applied to the mouthpiece. Thus, the mouthpiece is lifted and the orifice 2 opened for each exhalation process in which the exhalation is delivered into the mouthpiece without having to overcome the resistance of the valve member subjected to the initial stress. By disposing the valve member that is not subjected to the initial stress to the mouthpiece, vibration of the valve member due to resonance can be prevented, and therefore, the scattering of the droplets can be effectively avoided.
[0015]
FIG. 4 shows a third embodiment of the mouthpiece according to the present invention. The collar portion 11 is substantially similar to the mouthpiece such that the edge 12 of the collar portion 11 is continuous with the wedge-shaped projection 10 so that a valve member fixed in the region of the wedge-shaped projection 10 closes the orifice 2. It is formed in the orifice 2 of the tubular base 1. As in the case of the first and second embodiments, a slot 5 is provided in the wedge-shaped protrusion 10 of the mouthpiece wall for fixing the valve member, and here the fixed protrusion of the valve member. Can be inserted and fixed. A groove is formed in the wedge-shaped protrusion 10 parallel to the slot 5 and thus parallel to the edge of the orifice, as shown in FIG. In this way, the edge 12 of the collar portion 11 continues to the region of the wedge-shaped protrusion 10. The surface of the wedge-shaped protrusion 10 facing the valve member is configured to be flush with the edge 12 of the collar portion 11. Therefore, also in this embodiment, the valve member is in contact with almost no initial stress. In this embodiment, since the plane of the edge 12 extends substantially parallel to the surface of the base wall where the orifice 2 is formed, the height of the collar 11 is substantially constant.
[0016]
In the third embodiment of the present invention, as shown in FIG. 4, the orifice 2 is provided with a bar 13 extending in the longitudinal direction of the mouthpiece. The edge of the bar 13 facing the valve member is below the edge 12 of the collar 11 formed by the orifice 2 at the end of the bar 13 opposite the fixed part of the valve member, The member is not in contact with the bar 13. The bar 13 additionally forms an enlarged contact surface according to the present invention, which interacts with the enlarged contact surface of the collar portion 11 and produces additional adhesion from the edge 12 toward the interior of the base. Since a large amount of accumulated liquid is safely held by the contact surface according to the present invention at the position of the contact surface of the collar portion 11 where the bar 13 intersects the collar portion 11, a liquid droplet is caused by the movement of the valve member during the patient's expiration process The risk of separation is further reduced. Further, the bar 13 prevents the valve member from being inadvertently sucked into the opening even when excessively strong intake is performed.
[0017]
The cross section of the bar 13 may be rectangular or trapezoidal. When the cross section is trapezoidal, it is advantageous that the edge of the short side (narrower side) faces the valve member. In this way, the accumulated liquid can be easily returned, and even when a mouthpiece is manufactured as an injection molded product, it can be taken out from the molding die (easily).
[0018]
A fourth embodiment of the present invention will be described below with reference to FIGS. Since this embodiment also coincides in many respects with the already described embodiment, the features included in the above embodiment will not be described in detail. Even in the case of the fourth embodiment, the orifice 2 is provided with a bar 14 extending in the longitudinal direction of the mouthpiece. As shown in FIG. 6, the bar 14 extends further below the plane of the orifice toward the base 1 of the mouthpiece.
[0019]
At the end of the bar 14 opposite the fixed part of the valve member, the edge of the bar 14 facing the valve member is below the edge 12 of the collar part 11 formed in the orifice 2.
In the fourth embodiment, the bar 14 continues in the mouthpiece in the form of an extension bar 15 as shown in FIG. On the other hand, in this manner, the bar 14 extends considerably below the plane of the orifice 2 so that the enlarged contact surface located directly on the orifice 2 is enlarged. On the other hand, the liquid also adheres to the inner wall or extension bar 15 of the mouthpiece, respectively, and the accumulated liquid in the orifice 2 is affected by the extension bar 15 on the inner wall of the base 1 of the mouthpiece so that it is almost returned to the inside of the mouthpiece. As a result, a part of the inner wall of the mouthpiece is incorporated in the enlarged contact surface according to the invention. In this way, since the liquid is actually guided and discharged from the orifice 2, it does not come into contact with the valve member and does not scatter.
[0020]
A crossbar 16 extending across the base 1 of the mouthpiece can be provided on the bar 14 or its extension 15 (only shown in FIG. 6 in the region of the extension 15 by a dotted line). The crossbar 16 serves to help return the accumulated liquid guided by the bar 14 and its extension 15.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a first embodiment of a mouthpiece according to the present invention.
FIG. 2 is a perspective view of the mouthpiece according to the first embodiment of the present invention shown in FIG. 1 (excluding the valve member).
FIG. 3 is a perspective view of a mouthpiece according to a second embodiment of the present invention (excluding a valve member).
FIG. 4 is a perspective view of a mouthpiece according to a third embodiment of the present invention (excluding a valve member).
FIG. 5 is a perspective view of a fourth embodiment of the mouthpiece according to the present invention (excluding the valve member).
FIG. 6 is a sectional view of a fourth embodiment of a mouthpiece according to the present invention.
[Explanation of symbols]
1 Base 2 Orifice 3 Valve Member 4 Fixed Protrusion 5 Slot (Fixed Hole)
6, 8, 11 Collar portion 7, 9, 12 Edge portion 10 Wedge-shaped protruding portion 13, 14 Bar 15 Extension bar (extension portion)
16 Crossbar

Claims (15)

  1. A mouthpiece for an inhalation therapy device for preparing an inhalable aerosol for a patient,
    A substantially tubular base having a side wall and an orifice provided in the side wall;
    Dimensions and shape are designed to close the orifice, part of which is fixed to the base, the other part is non-fixed, and the orifice is closed during the inhalation process through the mouthpiece A flat resilient valve member configured such that during the exhalation process in which exhalation is delivered into the mouthpiece, the orifice is opened by movement of the other non-fixed part away from the base; and
    A contact surface for accumulating and holding liquid from the aerosol for inhalation by adhering,
    Have
    The contact surface is provided at a position opposite to the position where the valve member is fixed to the base and the orifice, and has a collar extending outward from the base. Is a mouthpiece for an inhaler that forms a contact surface that contacts the valve member and has an edge that functions as a valve seat for the valve member .
  2.   2. A mouthpiece according to claim 1, characterized in that it is provided with bars (13, 14) extending in the orifice (2).
  3.   The mouthpiece according to claim 2, characterized in that the bars (13, 14) extend in the longitudinal direction of the base (1).
  4.   The mouthpiece according to claim 2 or 3, characterized in that the bar (13, 14) is inside the open face outside the orifice (2).
  5.   5. An extension bar (15) that is joined to the bar (14) arranged in the orifice (2) and extends on the inner wall of the base (1) is provided. The mouthpiece as described in any one.
  6.   A cross bar (16) is provided which joins the bar (13, 14) or the extension bar (15) disposed in the orifice (2) and extends across the base (1). The mouthpiece according to any one of claims 2 to 5.
  7.   The fixing hole (5) is provided in the base (1) for fixing the valve member (3) in the vicinity of the orifice (2). The mouthpiece according to one.
  8.   The mouthpiece according to claim 7, characterized in that the fixing hole is a slot (5).
  9.   9. A mouthpiece according to claim 7 or 8, characterized in that the valve member (3) has a fixed protrusion (4) which can be inserted into a fixing hole (5) to fix itself.
  10.   A wedge-shaped protrusion (10) is provided on the outer wall of the base (1), the surface of the wedge-shaped protrusion (10) facing the valve member (3) is the edge of the collar (8) (8) It is configured to be continuous with the edge (12) of the collar (11), so that the valve member (3) can be fixed to the mouthpiece with little initial stress. The mouthpiece according to any one of claims 1 to 8, characterized in that
  11.   The mouthpiece according to claim 10, characterized in that a fixing hole (5) is arranged in the wedge-shaped projection (10).
  12.   The mouthpiece according to any one of claims 1 to 11, characterized in that the valve member (3) is made of synthetic silicone or synthetic rubber.
  13.   13. The orifice according to claim 1, wherein the orifice (2) is tongue-shaped and the tip of the tongue-shaped orifice (2) faces the fixed part of the valve member (3). The mouthpiece described in.
  14.   The mouthpiece according to any one of claims 1 to 3, characterized in that the base (1) is integrally formed of a synthetic material or a plastic material.
  15. A mouthpiece for an inhalation therapy device for preparing an inhalable aerosol for a patient,
    A substantially tubular base having a side wall and an orifice provided in the side wall;
    Dimensions and shape are designed to close the orifice, part of which is fixed to the base, the other part is non-fixed, and the orifice is closed during the inhalation process through the mouthpiece A flat resilient valve member configured such that during the exhalation process in which exhalation is delivered into the mouthpiece, the orifice is opened by movement of the other non-fixed part away from the base; and
    A contact surface for accumulating and holding liquid from the aerosol for inhalation by adhering; and
    A bar extending above the orifice and having an upper edge located away from the valve member and below the valve member when the valve member is in a position to close the orifice;
    Yes, and so that the contact surface performs the opening and closing of the orifice by the motion of the valve member, a mouthpiece for the inhaler to have a rim which serves as a valve seat of the valve member.
JP00857499A 1998-01-16 1999-01-14 Mouthpiece for inhalation therapy device Expired - Fee Related JP4625551B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19801545A DE19801545C2 (en) 1998-01-16 1998-01-16 Mouthpiece for inhalation therapy devices
DE19801545.3 1998-01-16

Publications (2)

Publication Number Publication Date
JPH11276587A JPH11276587A (en) 1999-10-12
JP4625551B2 true JP4625551B2 (en) 2011-02-02

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JP00857499A Expired - Fee Related JP4625551B2 (en) 1998-01-16 1999-01-14 Mouthpiece for inhalation therapy device

Country Status (4)

Country Link
US (1) US6606990B2 (en)
JP (1) JP4625551B2 (en)
DE (1) DE19801545C2 (en)
GB (2) GB9827370D0 (en)

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US6606990B2 (en) 2003-08-19
GB9827370D0 (en) 1999-02-03
DE19801545A1 (en) 1999-08-05
GB2333236B (en) 2002-10-23
JPH11276587A (en) 1999-10-12
GB2333236A (en) 1999-07-21
US20020056448A1 (en) 2002-05-16
DE19801545C2 (en) 2000-06-29

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